import java.util.Scanner;

public class Test5 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int n = in.nextInt();
            in.nextLine();
            int[] nums = new int[n];
            int max = 0;
            for (int i = 0; i < n; i++) {
                nums[i] = in.nextInt();
                max = Math.max(max, nums[i]);
            }
            for (int num : nums) {
                if (max / num != 1 && max / num % 2 != 0) {
                    System.out.println("NO");
                    return;
                }
            }
            System.out.println("YES");
        }
    }
}
